54 MALVACE^. (mallow FAMILY.) 



Florida, and westward. May - September. — Stems 1° high. Flowers purple, 

 2' wide, on peduncles which are sometimes 1° long. 



3. C. alC3BOides, Gray. Strigose-pubescent ; stems slender (1° high) ; 

 lower leaves triangular-cordate, incised ; the upper 5 - 7-parted, laciniate, the 

 uppermost divided into linear segments ; flowers corymbose, on slender pedun- 

 cles (rose-color or white) ; involucel none ; carpels obtusely beaked, crested and 

 strongly wrinkled on the back. (Sida alcseoides, Michx.) — Barren oak lands, 

 Tennessee. 



3. MALVASTRUM, Gray. 



Involucel 1 - 3-leaved or none. Styles 5 - 20. Stigmas capitate. Carpels 



beaked or beakless, 1-seeded. Seed ascending. Embryo cui-ved or annular. 



Hadicle inferior. — Herbs or shrubby plants, rough with rigid hairs. Flowers 

 yellow. 



1. M. tricuspidatum, Gray. Perennial or shrubby; stem branching; 

 leaves ovate or oblong-ovate, serrate, acute, petioled ; stipules lanceolate ; flow- 

 ers in leafy spiked racemes ; petals obliquely truncated ; carpels 10- 12, more or 

 less distinctly 3-toothed or awned at the ape.^. — South Florida. — Stems 1° high. 

 Involucel 3-leavcd. 



2. M. angustum, Gray. Annual ; stem erect, branching ; leaves lanceo- 

 late, sparingly serrate, short-potiolcd ; stipules bristle-like ; ilowers axillarj-, 

 mostly solitary ; involucel setaceous, 2 -3-leavcd; carpels 5, circular, awnless, 

 at length 2-valved. (Sida hispida, Pur.ih. ■? Kll. 1) — South Carolina and west- 

 ward. — Stems 6'- 12' high. Calyx enlarged in fruit. 



4. SIDA, L. 



Involucel none. Calyx angular. Styles 5 - 1.5. Stigmas capitate. Ovaries 

 I-celled. Carpels erect, mostly 2-valved and 2-beaked at the apex, separating 

 at maturity from each other, and from the central axis. Seed resupinate, sus- 

 pended, 3-angled. Embryo cui-ved. Badicle superior. — Branching herbs or 

 shrubs, with chiefly undi^■ided leaves, and small yellow or reddish flowers in 

 their axils. 



* Leaves, at least the lower ones, cordate : carpels 5. 



1. S. spinosa, L. Annual, minutely pubescent; branches erect; leaves 

 oblong-ovate, acute, serrate, the slender petioles often with a tubercular spine at 

 the base, the lower ones cordate ; stipules setaceous, half as long as the petioles ; 

 flowere single or clustered, on short erect peduncles ; carpels faintly reticnlated,' 

 each pointed with two erect subulate spines. — AVa.ste places, Florida and north- 

 ward. July - September. — Stems 1°- 2° high. Flowers J' wide, yellow. 



2. S. supina, L'Her. Perennial, tomentoso ; stems divided at the base 

 into slender simple ascending or prostrate branches ; leaves all round-cordate, 

 crenate, rounded at the apex, hoary beneath ; the slender petioles spineless at 

 the base ; stipules minute, subulate, deciduous ; flowers solitary ; the peduncles 

 half as long as the petioles and reflexed in fruit ; carpels downy, reticulated, 

 almost beakless, opening irregularly near the membranaceous base. ( S. ovata, 

 Cav. S. proenmbens, Swartz.) — South Florida. October. — Stems 6'-12' 



